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Top-Rated Tankless water heater installers in Woodinville - Updated Nov 2026

Avatar for Stream Water Heaters
Stream Water Heaters
5.0(
50
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"My water heater tank stopped working so I decided to convert to a tankless system. Chad and George were who I worked with. I had a great experience with both of them. I was very pleased with their knowledge, work, communication and help. I would highly recommend them to other house owners."
A 20-Year-old gas WH.
A 20-Year-old gas WH.
Preventative Gas Repl.
Preventative Gas Repl.
Non-Condensing Tankless W

+1

Response time4 hrs
Response rate100%
Recommended by11%of homeowners
Avatar for Stream Water Heaters
Stream Water Heaters
5.0(
51
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"My water heater started leaking and my hot water was gone. I got an outrageous quote from a local plumber who was too busy too replace it. Thankfully I was able to contact George, and he was able to come the same day to replace it. Not to mention his prices were much affordable. I would highly recommend anyone who needs their water heater serviced!"
New
New 3
New 2
New Setup 2
New setup

+8

Response time5 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Twin Water Heater LLC
Twin Water Heater LLC
5.0(
9
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Austin with Twin Water Heater did an amazing job converting our traditional tank water heater to a tankless system. He was knowledgeable, professional, and took the time to explain the entire process and answer all of our questions. The installation was clean and everything turned out great. I especially appreciated how transparent he was about the work that needed to be done and the cost—there were no surprises or pressure to add anything unnecessary. You can tell he really cares about doing the job correctly and making sure his customers are happy with the end result. We’ve been loving the tankless system and having endless hot water! I would absolutely recommend Austin and Twin Water Heater to anyone looking for a water heater installation or tankless conversion."
Tank to Tankless
Natural Gas Water Heater
Electric Water Heater
Tankless Flush
Essency (On Demand)

+4

9 neighbors recently requested a quote
Avatar for Day & Nite Plumbing & Heating, Inc.
Day & Nite Plumbing & Heating, Inc.
4.3(
225
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

In business since 1954

Emergency services offered

Warranties offered

"Rob came out to review our existing system and helped us figure out what kind and brand of heat pump would work best with our system. He was very patient and informative, and answered all our questions without any pressure or up-sells (we had quotes from five providers). We signed the contract and payed our deposit in June 2021, but unfortunately global supply chain issues delayed the parts being received. Day & Nite were communicative of the issue and offered several alternatives, including a refund of the deposit. We opted to wait for the parts. It took four months, but the techs (lead by Jeff B) were fantastic and very accommodating in how we wanted piping and wiring routed. We are very pleased with how it's turned out and loved working with a local (and family owned!) company! Our gas water heater is due for replacement soon, and we'll be coming back to Day & Nite for that!"
Outdoor Ductless Unit
Indoor Ductless Unit
Outdoor Ductless lineset and Unit
Pump System
2 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for SeaTown Electric Heating and Air
SeaTown Electric Heating and Air
4.7(
1,638
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Knowledgeable and fast! Had access to the heat pump technology I wanted to install while replacing defunct water heater. Prompt and efficient. Super satisfied!"
Seattle's Rewire Specialists
Generator
Tesla Chargers
Knob and Tube Removal
Ductless Install

+26

Response time1 day
11 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Private I Plumbing LLC
Private I Plumbing LLC
5.0(
26
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"My water heater failed and was leaking water. Mark came out and replaced and installed a new water heater quickly and efficiently. I will use him for any future issues."
Water heater replacement
Water heater replacement
Water Heater install
Water Heater install
Water Heater install

+18

Response time6 hrs
Response rate100%
61 neighbors recently requested a quote
Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
4.6(
1,249
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Emergency services offered

Warranties offered

"Dominick was on time explained what he was going to repair did a great job explained and wrote up estimate for replacing a new water heater fast service, polite technician explained my options for new water heater to be replaced in Jan great guy will hire him in Jan to replace the hot water heater"
Pipe llining
Pipe relining
Pipe relining
Camera inspections
Response time50 mins
Response rate100%
21 neighbors recently requested a quote
Avatar for Trident Plumbing & Drain Cleaning
Trident Plumbing & Drain Cleaning
4.9(
162
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved

In business since 2016

Emergency services offered

Warranties offered

"We hired Trident plumbing to install a Flo Water Leak Detection device. We had a hard time finding a plumber who is familiar with the device. Also, many of the plumbers who came out were reluctant to do the work because the area where the main shut off valve is located, is very tight to reroute the pipe and install the Flo device. We received quotes ranging from $500 -$3500 and work statement which involved removing water heater or tearing out a wall from the closet to get to the main shut off valve. Luckily, Davon from Trident Plumbing was familiar and knowledgable with Flo. He was very creative in coming up with a configuration where the main shut off valve, PRV and Flo device can be easily accessible without removing water heater or tearing out a wall. Also, we really appreciated his suggestion to replace the 25 year old PRV and the main shut off valve with a ball valve which is much easier to turn off and on in case of emergency. After Davon completed the work, he performed a thorough check to ensure everything worked properly. He even checked the water heater for us. We will definitely hire Trident Plumbing, Davon, again for any future plumbing work. Thank you, Davon!"
Response time1 day
Response rate100%
Recommended by91%of homeowners
Avatar for Rescue Rooter Seattle
Rescue Rooter Seattle
4.5(
133
)
Tankless Water Heater - Install

Serving Woodinville, WA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1976

Free estimates

Emergency services offered

"Plumbing Technician Dennis Poznyur did an outstanding job shutting/capping off a natural gas line servicing a gas dual fuel range in preparation for installing an induction range. Kudos to Dennis for very professional service."
Clogged Drain
15 neighbors recently requested a quote
Recommended by88%of homeowners
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